1-1-4
2FD/2FF/2FG-3.0
1-6-4 Drum section ...................................................................................................................................... 1-6-32
(1) Detaching and refitting the drum unit............................................................................................ 1-6-32
(2) Detaching and refitting the main charger unit............................................................................... 1-6-32
(3) Detaching and refitting the drum separation claw assemblies..................................................... 1-6-33
1-6-5 Developing section ............................................................................................................................. 1-6-34
(1) Detaching and refitting the developing unit .................................................................................. 1-6-34
1-6-6 Transfer section ................................................................................................................................. 1-6-35
(1) Detaching and refitting the transfer roller assembly..................................................................... 1-6-35
1-6-7 Fixing section ..................................................................................................................................... 1-6-36
(1) Detaching and refitting the fixing unit ........................................................................................... 1-6-36
(2) Detaching and refitting the heat roller separation claws............................................................... 1-6-36
(3) Detaching and refitting the press roller......................................................................................... 1-6-37
(4) Detaching and refitting the fixing heater M and S......................................................................... 1-6-38
(5) Detaching and refitting the heat roller........................................................................................... 1-6-39
(6) Detaching and refitting the fixing unit thermistor 1 and 2............................................................. 1-6-40
(7) Adjusting front position of the fixing unit (adjusting lateral squareness)....................................... 1-6-41
1-6-8 Others ................................................................................................................................................ 1-6-42
(1) Detaching and refitting the ozone filters (only for 230 V specifications)....................................... 1-6-42
1-7 Requirements on PCB Replacement
1-7-1 Upgrading the firmware on the main PCB............................................................................................ 1-7-1
1-7-2 Adjustment-free variable resisters (VR)............................................................................................... 1-7-2
1-7-3 Remarks on main PCB replacement.................................................................................................... 1-7-2
1-7-4 Upgrading the the printer board firmware ............................................................................................ 1-7-3
2-1 Mechanical construction
2-1-1 Paper feed section ............................................................................................................................... 2-1-1
2-1-2 Main charging section .......................................................................................................................... 2-1-5
2-1-3 Optical section...................................................................................................................................... 2-1-7
(1) Original scanning ............................................................................................................................ 2-1-8
(2) Image printing ................................................................................................................................. 2-1-9
2-1-4 Developing section ............................................................................................................................. 2-1-12
(1) Formation of magnetic brush........................................................................................................ 2-1-13
(2) Computing the absolute humidity ................................................................................................. 2-1-14
(3) Single component developing system.......................................................................................... 2-1-15
2-1-5 Transfer and separation sections....................................................................................................... 2-1-17
2-1-6 Cleaning and charge erasing sections............................................................................................... 2-1-19
2-1-7 Fixing section ..................................................................................................................................... 2-1-20
2-1-8 Eject and switchback sections............................................................................................................ 2-1-22
2-1-9 Duplex section.................................................................................................................................... 2-1-24
(1) Paper conveying operation in duplex copying.............................................................................. 2-1-25
2-2 Electrical Parts Layout
2-2-1 Electrical parts layout ........................................................................................................................... 2-2-1
(1) PCBs .............................................................................................................................................. 2-2-1
(2) Switches and sensors..................................................................................................................... 2-2-2
(3) Motors ............................................................................................................................................. 2-2-4
(4) Other electrical components........................................................................................................... 2-2-5
2-3 Operation of the PCBs
2-3-1 Power source PCB ............................................................................................................................... 2-3-1
2-3-2 Main PCB ............................................................................................................................................. 2-3-5
2-3-3 Operation unit PCB ............................................................................................................................ 2-3-17
2-3-4 Scanner drive PCB............................................................................................................................. 2-3-22
2-3-5 CCD PCB ........................................................................................................................................... 2-3-25
Содержание d-Copia 300
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